Cancel service

I need to cancel my home internet service with Xfinity now - effective today. I tried multiple options but all made to arranging callbacks. Imagine a deaf person being limited to dealing with calls? Does it sound like Xfinity is depriving people of their basic rights to satisfy corporate greed? 
I asked for cancellation service email, i requested a transfer with chats with agents - nothing worked (ready to provide chatIDs), I am back to zero but I am being charged extra 75 dollars every month for low speed internet connection with is extremely unfair taken market prices. 
I demand service cancellation and official excuses if not reimbursement for the last year since the first filed request.